Any innovative ideas for lugging a heavy/awkward generator

At one time, Camping World sold a special made luggage bag with wheels. It had small compartments for the accessories and protected the generator well. In addition, it had both hand and shoulder straps. I bought two for my pair of generators and did have trouble with weak bottoms, axles and wheels, but I beefed them up. They quit selling them and I know of no other source. Perhaps some searching for generator bags or one that can be modified might turn up something.